When did momondo last update prices for flights from Helena Airport to London?

Prices for flights from Helena Airport to London were last updated today.

How old do you have to be to fly from Helena Airport to London?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Helena Airport to London.

What documentation or ID do you need to fly to London?

The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$758 Cheap Flights from Helena to London in 2026/27

Find the cheapest flights from Helena to London

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:08 pm - 3:35 pmHLN Helena-LHR London Heathrow

19h 27m2 stops Salt Lake City Seattle/Tacoma Intl

10:45 am - 10:24 pmLHR London Heathrow-HLN Helena

17h 39m1 stop Salt Lake City

$758Virgin Atlantic

Wed, Oct 21 - Wed, Oct 28

7:15 am - 10:20 amHLN Helena-LHR London Heathrow

20h 05m2 stops Salt Lake City New York John F Kennedy Intl

11:20 am - 10:24 pmLHR London Heathrow-HLN Helena

17h 04m2 stops Detroit Metropolitan Wayne County Salt Lake City

$758Virgin Atlantic

Wed, Oct 21 - Wed, Oct 28

4:08 pm - 12:20 pmHLN Helena-LHR London Heathrow

13h 12m1 stop Seattle/Tacoma Intl

2:45 pm - 3:31 pmLHR London Heathrow-HLN Helena

31h 46m1 stop Seattle/Tacoma Intl

$764Alaska Airlines

Tue, Mar 2 - Thu, Mar 4

7:15 am - 7:05 amHLN Helena-LHR London Heathrow

16h 50m2 stops Salt Lake City Minneapolis St Paul

6:20 am - 10:26 pmLHR London Heathrow-HLN Helena

23h 06m2 stops Paris Charles de Gaulle Salt Lake City

$801Multiple Airlines

Sun, Nov 8 - Sun, Nov 15

7:15 am - 7:50 amHLN Helena-LHR London Heathrow

17h 35m2 stops Salt Lake City Atlanta Hartsfield-Jackson

10:45 am - 10:26 pmLHR London Heathrow-HLN Helena

18h 41m1 stop Salt Lake City

$808Multiple Airlines

Sun, Nov 8 - Sun, Nov 15

4:41 pm - 12:20 pmHLN Helena-LHR London Heathrow

12h 39m1 stop Seattle/Tacoma Intl

2:45 pm - 4:04 pmLHR London Heathrow-HLN Helena

32h 19m1 stop Seattle/Tacoma Intl

$809Alaska Airlines

Thu, Nov 5 - Thu, Nov 12

1:08 pm - 1:45 pmHLN Helena-LHR London Heathrow

17h 37m2 stops Salt Lake City Paris Charles de Gaulle

6:20 am - 10:26 pmLHR London Heathrow-HLN Helena

23h 06m2 stops Paris Charles de Gaulle Salt Lake City

$816Air France

Thu, Nov 5 - Thu, Nov 12

7:00 am - 5:05 pmHLN Helena-LHR London Heathrow

27h 05m2 stops Denver Intl Munich Franz Josef Strauss

11:10 am - 8:59 pmLHR London Heathrow-HLN Helena

40h 49m2 stops Toronto Pearson Intl Denver Intl

$826United Airlines

Tue, Mar 2 - Thu, Mar 4

7:00 am - 9:40 amHLN Helena-LHR London Heathrow

19h 40m1 stop Denver Intl

9:30 am - 8:59 pmLHR London Heathrow-HLN Helena

42h 29m2 stops Frankfurt am Main Denver Intl

$827United Airlines

Tue, Mar 2 - Thu, Mar 4

7:00 am - 5:05 pmHLN Helena-LHR London Heathrow

27h 05m2 stops Denver Intl Munich Franz Josef Strauss

11:10 am - 8:59 pmLHR London Heathrow-HLN Helena

40h 49m2 stops Toronto Pearson Intl Denver Intl

$836United Airlines

Tue, Mar 2 - Thu, Mar 4

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Alaska Airlines flights from Helena to London

Our best Alaska Airlines deals on Helena to London flight tickets

Alaska Airlines

Mar 2

HLN4:08 pmHelena

13h 12m

1 stop

LHR12:20 pmLondon Heathrow

Mar 4

LHR2:45 pmLondon Heathrow

31h 46m

1 stop

HLN3:31 pmHelena

$764

Alaska Airlines

Nov 5

HLN4:41 pmHelena

12h 39m

1 stop

LHR12:20 pmLondon Heathrow

Nov 12

LHR2:45 pmLondon Heathrow

32h 19m

1 stop

HLN4:04 pmHelena

$809

Alaska Airlines

Mar 2

HLN4:08 pmHelena

13h 12m

1 stop

LHR12:20 pmLondon Heathrow

Mar 4

LHR2:45 pmLondon Heathrow

31h 46m

1 stop

HLN3:31 pmHelena

$885

United Airlines flights from Helena to London

Our best United Airlines deals on Helena to London flight tickets

United Airlines

Mar 2

HLN7:00 amHelena

27h 05m

2 stops

LHR5:05 pmLondon Heathrow

Mar 4

LHR11:10 amLondon Heathrow

40h 49m

2 stops

HLN8:59 pmHelena

$825

United Airlines

Mar 2

HLN7:00 amHelena

27h 05m

2 stops

LHR5:05 pmLondon Heathrow

Mar 4

LHR11:10 amLondon Heathrow

40h 49m

2 stops

HLN8:59 pmHelena

$826

United Airlines

Mar 2

HLN7:00 amHelena

19h 40m

1 stop

LHR9:40 amLondon Heathrow

Mar 4

LHR9:30 amLondon Heathrow

42h 29m

2 stops

HLN8:59 pmHelena

$827

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Wed 10/21

1:08 pm-3:35 pm

2 stops19h 27m

London Heathrow

Wed 10/28

10:45 am-10:24 pm

1 stop17h 39m

$758

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Wed 10/21

7:15 am-10:20 am

2 stops20h 05m

London Heathrow

Wed 10/28

11:20 am-10:24 pm

2 stops17h 04m

$758

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Tue 3/2

4:08 pm-12:20 pm

1 stop13h 12m

London Heathrow

Thu 3/4

2:45 pm-3:31 pm

1 stop31h 46m

$764

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Sun 11/8

7:15 am-7:05 am

2 stops16h 50m

London Heathrow

Sun 11/15

6:20 am-10:26 pm

2 stops23h 06m

$801

Quickest round-trip

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Sun 11/8

7:15 am-7:50 am

2 stops17h 35m

London Heathrow

Sun 11/15

10:45 am-10:26 pm

1 stop18h 41m

$808

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Thu 11/5

4:41 pm-12:20 pm

1 stop12h 39m

London Heathrow

Thu 11/12

2:45 pm-4:04 pm

1 stop32h 19m

$809

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Thu 11/5

1:08 pm-1:45 pm

2 stops17h 37m

London Heathrow

Thu 11/12

6:20 am-10:26 pm

2 stops23h 06m

$816

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Tue 3/2

7:00 am-5:05 pm

2 stops27h 05m

London Heathrow

Thu 3/4

11:10 am-8:59 pm

2 stops40h 49m

$826

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Tue 3/2

7:00 am-9:40 am

1 stop19h 40m

London Heathrow

Thu 3/4

9:30 am-8:59 pm

2 stops42h 29m

$827

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Tue 3/2

7:00 am-5:05 pm

2 stops27h 05m

London Heathrow

Thu 3/4

11:10 am-8:59 pm

2 stops40h 49m

$836

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Helena to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What airlines fly to London?

United Airlines, Alaska Airlines and Delta are the top three most popular airlines that fly to London from Helena according to our data. United Airlines is the first choice among our users, with 55% of people opting to fly with this airline when traveling to London. Keep in mind that there are 3 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

When to book flights from Helena to London

Are you open to changing your travel dates? Check out the ideal times to fly from Helena to London according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Helena to London (HLN to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Helena to London

Best Price Found	$758
Fastest flight time	16h 50m
Direct flights	None

The best flight deal from Helena to London found on momondo in the last 72 hours is $758

The fastest flight from Helena to London takes 16h 50m

There are no direct flights from Helena to London. There are no popular flight routes from Helena to London.

Search flight deals

Frequently asked questions about flying from Helena to London

How far is Helena to London by plane?
Helena and London are 4547.6 mi apart from one another. In terms of flight time, this usually takes a little over 16h 50m.
When did momondo last update prices for flights from Helena Airport to London?
Prices for flights from Helena Airport to London were last updated today.
How old do you have to be to fly from Helena Airport to London?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Helena Airport to London.
What documentation or ID do you need to fly to London?
The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Hounslow

Gatwick

Milton Keynes

Croydon

Luton

Hayes

Dover

Wembley

Kingston upon Thames

Richmond

Stansted

Watford

Harrow

Cobham

Worthing

Eastbourne

Slough

Hook

Uxbridge

Ilford

Why use momondo?

Why should I use momondo to find a flight deal from Helena to London?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Helena to London. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Helena to London with flexible booking policies on momondo?

Yes. All flights to London from Helena on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Helena to London?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Helena to London.

I’m not ready to book a flight from Helena to London right now. Can momondo alert me if prices change?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Helena and alert you when they change.

An easier way to manage your London trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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London Stansted Airport

Cheap flights from Helena to London from $758

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Helena to London departing on 10/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Helena to London

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Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Alaska Airlines flights from Helena to London

Our best Alaska Airlines deals on Helena to London flight tickets

United Airlines flights from Helena to London

Our best United Airlines deals on Helena to London flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Helena to London that are best for you.

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How to get the cheapest flight ticket from Helena to London

What airlines fly to London?

When to book flights from Helena to London

Cheap Helena to London (HLN to LON) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Helena to London

Traveling to a place near London?

Why use momondo?

An easier way to manage your London trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London

Fly your favorite airline to London

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to London

List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Helena

According to popular flight searches on momondo this year

Complete your trip to London

Explore popular destinations other users love

According to popular flight searches on momondo this year